Nanostructured surfaces

Increasing of specularity of surface scattering of conduction electrons via adsorption-induced transformation of surface electronic structure
Sologub S.V.
Department of Adsorption Phenomena, Institute of Physics of the NAS of Ukraine. Prospect Nauki, 46, Kyiv-03039, Ukraine. 
E-mail: sologub@iop.kiev.ua

Surface scattering of conduction electrons is one of the most important phenomenon determining properties of nanoscale conductors. Contribution of surface scattering to nonconscale’ electrical conductance increases strongly with decreasing of their transversal sizes. 
A review of experimental investigation of surface scattering [1,2], including the recent ones [3], will be presented. The experiments were performed by techniques based on classical galvanomagnetic phenomena (static skin effect and transversal magnetorestance). The methods allowed concentration of electric current near a metallic surface using the strong magnetic field.
The investigations reveal transformation of surface electronic structure induced by sybmonolayer adsorption, which results in increasing specularity of surface scattering. The effect is connected with blocking of transition between surface and bulk electronic states. Results were obtained for hydrogen and deuterium adsorbed on different single crystal surface of tungsten and molybdenum.

1.	Panchenko O.A., Sologub S.V. Effect of surface states on the surface scattering of current carriers // Phys. Rev. B.-2005.-71, N 19.-P. 193401(3).
2.	Panchenko O.A., Sologub S.V., Bordeniuk I.V. Scattering of current carriers on a Mo(110) surface covered with hydrogen and deuterium submonolayers // Surf. Sci.-2011.- 605, N 13-14.-P. 1287-1290.
3.	Sologub S.V., Bordeniuk I.V., Amirov R.H., Petrova N.V., Yakovkin I.N. Scattering of conduction electrons on the W(001) surface covered with the ordered deuterium monolayer // Surf. Sci.-2019.- 685, July 2019.-P. 13-18.